False flow readings from flow sensor.

[hotshot25120]

Hi Richard , Today I decided to try again to unplug the connector on the fav (3rd time) to see if the false reading are still there and for the first time yes even with the sensor unplug from the FAV I have false reading do my problem is not mechanical.

What do you suggest ? shield the cable ?

[Richard L]

I suggest using the sensor tip end as a detector. Move it around until you track down the source of interference and route the cable around it. You will probably need a mirror by the gauge if you are going to do this on your own.

Ignition coil associated cable is the worse.

[dave80]

Richard did you ever tested the effectiveness of some kind of EMI shield sleeve over the flow sensor cable? Wondering if that would help with any interference.
http://multimedia.3m.com/mws/mediawe...ld+Sleeves.pdf

[Richard L]

This is a good find. I don't know much about this but it looks good.

I don't get that many interference reports, so far I have heard a few reported since the introduction of the HFS3/4.

Re routing or rapping some grounded ali-foil seem to have solved the problem. It seemed to happen on Golfs and Minis.

[dave80]

Good source of emi shielding sleeve for people in USA/Canada is from these guys:
http://www.mcmaster.com/#emi-rfi-shi...eeving/=r085u6

[Richard L]

Do you have to register before entering the site?

[dave80]

Originally Posted by Richard L

Do you have to register before entering the site?

no sir. They are a very good and trusted company here in US.

[Richard L]

I followed the link but was asked to log in. OOps it worked this time.

[dave80]

fixed my problem for now. Moved the fav assembly to a new spot and false reading are gone.

[Richard L]

Did you use the shielding as well as relocation?